The 2nd highest viaduct in New Zealand is the 81 m high North Rangitikei viaduct spanning the Rangitikei River. It is the northern-most of the 3 large viaducts on the Mangaweka Deviation, opened in 1981, between Mangaweka and Taihape on the North Island Main Trunk Line. It is of concrete construction built by the cantilever technique from both ends. The central span is a clear 110 m long, the longest equal span of any railway bridge in New Zealand. Together with the approach spans on both sides, the bridge is 160 m long. Being of concrete construction, relatively short and often crossed at high speed, it is easily missed by travellers.